.exam-form {
    padding: 20px;
    background-color: #EEE;
    -webkit-border-radius: 6px;
    -moz-border-radius: 6px;
    border-radius: 6px;
}

.exam-desc {
    padding: 20px;
    background-color: #EEE;
    -webkit-border-radius: 6px;
    -moz-border-radius: 6px;
    border-radius: 6px;
    height:0px;
    padding-bottom:30%
}

.exam-alert {
    padding: 10px;
    background-color: #222;
    color: #EEE;
    -webkit-border-radius: 6px;
    -moz-border-radius: 6px;
    border-radius: 6px;
}

.exam-info {
    padding: 10px;
    background-color: #555;
    color: #FFF;
    -webkit-border-radius: 6px;
    -moz-border-radius: 6px;
    border-radius: 6px;
}

.exam-notify {
    margin-right:50px;
    margin-left:50px;
    color: red;
    position: fixed;
    bottom: 10px
}

.exam-login {
    padding: 20px;
    background-color: #CCC;
    -webkit-border-radius: 6px;
    -moz-border-radius: 6px;
    border-radius: 6px;
}

.container{
    display:table;
}

.row{
    display: table-cell;
    vertical-align: middle;
}

.vertical-center{
    position: absolute;
    top: 60%;
    left: 50%;
    transform: translate(-50%, -50%);
}